Polar bears chew through silicone in Winnipeg zoo's underwater tunnel

The Assiniboine Park Zoo has temporarily closed its underwater polar bear viewing tunnel*after the bears chewed into some of the*silicone*sealant. The zoo announced Friday that the tunnel, which is part of the Journey to Churchill exhibit, is*closed for repairs for at least one to two weeks.*However, officials have yet to determine the full extent of the damage. Visitors can still see the zoo's ... More...